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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: InputStreamReader.html 689 2013-06-28 19:22:16Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.stuff.io;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.FilterInputStream;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.io.IOException;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.io.InputStream;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>/**<a name="line.14"></a>
<span class="sourceLineNo">015</span> * Reads zero or more {@link InputStream}s serialized inside an underlying {@link InputStream} by an {@link OutputStreamWriter}.<a name="line.15"></a>
<span class="sourceLineNo">016</span> *<a name="line.16"></a>
<span class="sourceLineNo">017</span> * &lt;p&gt;<a name="line.17"></a>
<span class="sourceLineNo">018</span> * Instances of this class are thread safe, as are the {@link InputStream}s returned by {@link #read}.<a name="line.18"></a>
<span class="sourceLineNo">019</span> * &lt;/p&gt;<a name="line.19"></a>
<span class="sourceLineNo">020</span> *<a name="line.20"></a>
<span class="sourceLineNo">021</span> * @see OutputStreamWriter<a name="line.21"></a>
<span class="sourceLineNo">022</span> */<a name="line.22"></a>
<span class="sourceLineNo">023</span>public class InputStreamReader {<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>    // Escape codes<a name="line.25"></a>
<span class="sourceLineNo">026</span>    static final int CONTROL_ESCAPE = 1;<a name="line.26"></a>
<span class="sourceLineNo">027</span>    static final int CONTROL_SEPARATOR = 2;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>    // Special return values<a name="line.29"></a>
<span class="sourceLineNo">030</span>    private static final int RESULT_EOF = -1;               // read EOF on input<a name="line.30"></a>
<span class="sourceLineNo">031</span>    private static final int RESULT_SEPARATOR = -2;         // read stream separator<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    private final RandomEscape randomEscape = new RandomEscape();<a name="line.33"></a>
<span class="sourceLineNo">034</span>    private final InputStream input;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>    private NestedInputStream current;          // curently active nested input<a name="line.36"></a>
<span class="sourceLineNo">037</span>    private IOException exception;              // exception thrown on input<a name="line.37"></a>
<span class="sourceLineNo">038</span>    private int escape;                         // current escape character<a name="line.38"></a>
<span class="sourceLineNo">039</span>    private boolean closed;                     // whether this instance is closed<a name="line.39"></a>
<span class="sourceLineNo">040</span>    private boolean eof;                        // whether this instance has read EOF<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>    /**<a name="line.42"></a>
<span class="sourceLineNo">043</span>     * Constructor.<a name="line.43"></a>
<span class="sourceLineNo">044</span>     *<a name="line.44"></a>
<span class="sourceLineNo">045</span>     * @param input the underlying {@link InputStream} that will carry nested {@link InputStream}s within it<a name="line.45"></a>
<span class="sourceLineNo">046</span>     */<a name="line.46"></a>
<span class="sourceLineNo">047</span>    public InputStreamReader(InputStream input) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>        this.input = input;<a name="line.48"></a>
<span class="sourceLineNo">049</span>        this.escape = this.randomEscape.next();<a name="line.49"></a>
<span class="sourceLineNo">050</span>    }<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span>    /**<a name="line.52"></a>
<span class="sourceLineNo">053</span>     * Read the next {@link InputStream}.<a name="line.53"></a>
<span class="sourceLineNo">054</span>     *<a name="line.54"></a>
<span class="sourceLineNo">055</span>     * &lt;p&gt;<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * The returned {@link InputStream} will remain valid as long as it has not been closed, the underlying input<a name="line.56"></a>
<span class="sourceLineNo">057</span>     * has not been closed, and no subsequent invocation of this method has been made. As soon as any of those events occurs,<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * all subsequent accesses to the previously returned {@link InputStream} will throw an exception.<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * &lt;/p&gt;<a name="line.59"></a>
<span class="sourceLineNo">060</span>     *<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * &lt;p&gt;<a name="line.61"></a>
<span class="sourceLineNo">062</span>     * The returned {@link InputStream} may be closed prior to its EOF, in which case any remaining bytes will be skipped<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * over during the next invocation of this method.<a name="line.63"></a>
<span class="sourceLineNo">064</span>     * &lt;/p&gt;<a name="line.64"></a>
<span class="sourceLineNo">065</span>     *<a name="line.65"></a>
<span class="sourceLineNo">066</span>     * &lt;p&gt;<a name="line.66"></a>
<span class="sourceLineNo">067</span>     * Note: while any thread is blocked reading from the returned {@link InputStream}, this method will block as well.<a name="line.67"></a>
<span class="sourceLineNo">068</span>     * &lt;/p&gt;<a name="line.68"></a>
<span class="sourceLineNo">069</span>     *<a name="line.69"></a>
<span class="sourceLineNo">070</span>     * @throws IOException if this instance is closed<a name="line.70"></a>
<span class="sourceLineNo">071</span>     * @throws IOException if the underlying {@link InputStream} has thrown an exception<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * @throws return the next {@link InputStream}, or {@code null} if EOF has been reached on the underlying input<a name="line.72"></a>
<span class="sourceLineNo">073</span>     */<a name="line.73"></a>
<span class="sourceLineNo">074</span>    public synchronized InputStream read() throws IOException {<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>        // Check state<a name="line.76"></a>
<span class="sourceLineNo">077</span>        if (this.closed)<a name="line.77"></a>
<span class="sourceLineNo">078</span>            throw new IOException("this instance is closed");<a name="line.78"></a>
<span class="sourceLineNo">079</span>        if (this.exception != null)<a name="line.79"></a>
<span class="sourceLineNo">080</span>            throw new IOException("exception on the underlying stream", this.exception);<a name="line.80"></a>
<span class="sourceLineNo">081</span>        if (this.eof)<a name="line.81"></a>
<span class="sourceLineNo">082</span>            return null;<a name="line.82"></a>
<span class="sourceLineNo">083</span><a name="line.83"></a>
<span class="sourceLineNo">084</span>        // Close current stream (if any) and skip past abandoned bytes (if any)<a name="line.84"></a>
<span class="sourceLineNo">085</span>        if (this.current != null) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>            this.current.close();<a name="line.86"></a>
<span class="sourceLineNo">087</span>            if (!this.current.isEOF()) {<a name="line.87"></a>
<span class="sourceLineNo">088</span>                while (true) {<a name="line.88"></a>
<span class="sourceLineNo">089</span>                    if (this.readNext() &lt; 0)<a name="line.89"></a>
<span class="sourceLineNo">090</span>                        break;<a name="line.90"></a>
<span class="sourceLineNo">091</span>                }<a name="line.91"></a>
<span class="sourceLineNo">092</span>            }<a name="line.92"></a>
<span class="sourceLineNo">093</span>        }<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span>        // See what's next up<a name="line.95"></a>
<span class="sourceLineNo">096</span>        int firstValue = this.readNext();<a name="line.96"></a>
<span class="sourceLineNo">097</span>        if (firstValue == RESULT_EOF)<a name="line.97"></a>
<span class="sourceLineNo">098</span>            return null;<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span>        // Create new nested stream<a name="line.100"></a>
<span class="sourceLineNo">101</span>        this.current = new NestedInputStream(firstValue);<a name="line.101"></a>
<span class="sourceLineNo">102</span>        return this.current;<a name="line.102"></a>
<span class="sourceLineNo">103</span>    }<a name="line.103"></a>
<span class="sourceLineNo">104</span><a name="line.104"></a>
<span class="sourceLineNo">105</span>    // Read next byte (unescaped) or special return value<a name="line.105"></a>
<span class="sourceLineNo">106</span>    private int readNext() throws IOException {<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span>        // Already read EOF?<a name="line.108"></a>
<span class="sourceLineNo">109</span>        if (this.eof)<a name="line.109"></a>
<span class="sourceLineNo">110</span>            return RESULT_EOF;<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span>        // Read next byte<a name="line.112"></a>
<span class="sourceLineNo">113</span>        int ch = this.input.read();<a name="line.113"></a>
<span class="sourceLineNo">114</span>        if (ch == -1) {<a name="line.114"></a>
<span class="sourceLineNo">115</span>            this.eof = true;<a name="line.115"></a>
<span class="sourceLineNo">116</span>            return RESULT_EOF;<a name="line.116"></a>
<span class="sourceLineNo">117</span>        }<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span>        // Check for escape byte<a name="line.119"></a>
<span class="sourceLineNo">120</span>        if (ch == this.escape) {<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>            // Read escaped byte<a name="line.122"></a>
<span class="sourceLineNo">123</span>            if ((ch = this.input.read()) == -1) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>                this.eof = true;<a name="line.124"></a>
<span class="sourceLineNo">125</span>                return RESULT_EOF;<a name="line.125"></a>
<span class="sourceLineNo">126</span>            }<a name="line.126"></a>
<span class="sourceLineNo">127</span>            ch ^= this.escape;<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span>            // Advance escape character for next time<a name="line.129"></a>
<span class="sourceLineNo">130</span>            int prevEscape = this.escape;<a name="line.130"></a>
<span class="sourceLineNo">131</span>            this.escape = this.randomEscape.next();<a name="line.131"></a>
<span class="sourceLineNo">132</span><a name="line.132"></a>
<span class="sourceLineNo">133</span>            // Check control code<a name="line.133"></a>
<span class="sourceLineNo">134</span>            switch (ch) {<a name="line.134"></a>
<span class="sourceLineNo">135</span>            case CONTROL_ESCAPE:<a name="line.135"></a>
<span class="sourceLineNo">136</span>                return prevEscape;<a name="line.136"></a>
<span class="sourceLineNo">137</span>            case CONTROL_SEPARATOR:<a name="line.137"></a>
<span class="sourceLineNo">138</span>                return RESULT_SEPARATOR;<a name="line.138"></a>
<span class="sourceLineNo">139</span>            default:<a name="line.139"></a>
<span class="sourceLineNo">140</span>                break;<a name="line.140"></a>
<span class="sourceLineNo">141</span>            }<a name="line.141"></a>
<span class="sourceLineNo">142</span>            throw new IOException("rec'd unexpected escape code " + ch);<a name="line.142"></a>
<span class="sourceLineNo">143</span>        }<a name="line.143"></a>
<span class="sourceLineNo">144</span><a name="line.144"></a>
<span class="sourceLineNo">145</span>        // Just a normal character<a name="line.145"></a>
<span class="sourceLineNo">146</span>        return ch;<a name="line.146"></a>
<span class="sourceLineNo">147</span>    }<a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span>    /**<a name="line.149"></a>
<span class="sourceLineNo">150</span>     * Close this instance. Does nothing if already closed.<a name="line.150"></a>
<span class="sourceLineNo">151</span>     *<a name="line.151"></a>
<span class="sourceLineNo">152</span>     * &lt;p&gt;<a name="line.152"></a>
<span class="sourceLineNo">153</span>     * This closes the underlying input; however, if the {@link InputStream} most recently returned from {@link #read}<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * is still open, the close of the underlying input will be postponed until it is no longer open.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     * &lt;/p&gt;<a name="line.155"></a>
<span class="sourceLineNo">156</span>     *<a name="line.156"></a>
<span class="sourceLineNo">157</span>     * @throws IOException if an there is an error closing the underlying {@link InputStream}<a name="line.157"></a>
<span class="sourceLineNo">158</span>     */<a name="line.158"></a>
<span class="sourceLineNo">159</span>    public synchronized void close() throws IOException {<a name="line.159"></a>
<span class="sourceLineNo">160</span>        if (this.closed)<a name="line.160"></a>
<span class="sourceLineNo">161</span>            return;<a name="line.161"></a>
<span class="sourceLineNo">162</span>        this.closed = true;<a name="line.162"></a>
<span class="sourceLineNo">163</span>        if (this.current != null)<a name="line.163"></a>
<span class="sourceLineNo">164</span>            this.current.checkInputClose();<a name="line.164"></a>
<span class="sourceLineNo">165</span>    }<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span>    private class NestedInputStream extends FilterInputStream {<a name="line.167"></a>
<span class="sourceLineNo">168</span><a name="line.168"></a>
<span class="sourceLineNo">169</span>        private int firstValue;<a name="line.169"></a>
<span class="sourceLineNo">170</span>        private boolean firstRead = true;<a name="line.170"></a>
<span class="sourceLineNo">171</span>        private boolean closed;<a name="line.171"></a>
<span class="sourceLineNo">172</span>        private boolean eof;<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span>        public NestedInputStream(int firstValue) {<a name="line.174"></a>
<span class="sourceLineNo">175</span>            super(InputStreamReader.this.input);<a name="line.175"></a>
<span class="sourceLineNo">176</span>            this.firstValue = firstValue;<a name="line.176"></a>
<span class="sourceLineNo">177</span>        }<a name="line.177"></a>
<span class="sourceLineNo">178</span><a name="line.178"></a>
<span class="sourceLineNo">179</span>        @Override<a name="line.179"></a>
<span class="sourceLineNo">180</span>        public int read() throws IOException {<a name="line.180"></a>
<span class="sourceLineNo">181</span>            synchronized (InputStreamReader.this) {<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span>                // Check state<a name="line.183"></a>
<span class="sourceLineNo">184</span>                if (this.closed)<a name="line.184"></a>
<span class="sourceLineNo">185</span>                    throw new IOException("stream is closed");<a name="line.185"></a>
<span class="sourceLineNo">186</span>                if (InputStreamReader.this.exception != null)<a name="line.186"></a>
<span class="sourceLineNo">187</span>                    throw new IOException("exception on the underlying stream", InputStreamReader.this.exception);<a name="line.187"></a>
<span class="sourceLineNo">188</span>                if (this.eof)<a name="line.188"></a>
<span class="sourceLineNo">189</span>                    return -1;<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span>                // Read from the underlying stream<a name="line.191"></a>
<span class="sourceLineNo">192</span>                try {<a name="line.192"></a>
<span class="sourceLineNo">193</span><a name="line.193"></a>
<span class="sourceLineNo">194</span>                    // Read next unescaped byte or control code<a name="line.194"></a>
<span class="sourceLineNo">195</span>                    int ch;<a name="line.195"></a>
<span class="sourceLineNo">196</span>                    if (this.firstRead) {<a name="line.196"></a>
<span class="sourceLineNo">197</span>                        ch = this.firstValue;<a name="line.197"></a>
<span class="sourceLineNo">198</span>                        this.firstRead = false;<a name="line.198"></a>
<span class="sourceLineNo">199</span>                    } else<a name="line.199"></a>
<span class="sourceLineNo">200</span>                        ch = InputStreamReader.this.readNext();<a name="line.200"></a>
<span class="sourceLineNo">201</span>                    switch (ch) {<a name="line.201"></a>
<span class="sourceLineNo">202</span>                    case RESULT_EOF:<a name="line.202"></a>
<span class="sourceLineNo">203</span>                        throw new IOException("underlying stream was truncated");<a name="line.203"></a>
<span class="sourceLineNo">204</span>                    case RESULT_SEPARATOR:<a name="line.204"></a>
<span class="sourceLineNo">205</span>                        this.eof = true;<a name="line.205"></a>
<span class="sourceLineNo">206</span>                        return -1;<a name="line.206"></a>
<span class="sourceLineNo">207</span>                    default:<a name="line.207"></a>
<span class="sourceLineNo">208</span>                        break;<a name="line.208"></a>
<span class="sourceLineNo">209</span>                    }<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span>                    // Done<a name="line.211"></a>
<span class="sourceLineNo">212</span>                    return ch;<a name="line.212"></a>
<span class="sourceLineNo">213</span>                } catch (IOException e) {<a name="line.213"></a>
<span class="sourceLineNo">214</span>                    InputStreamReader.this.exception = e;<a name="line.214"></a>
<span class="sourceLineNo">215</span>                    throw e;<a name="line.215"></a>
<span class="sourceLineNo">216</span>                }<a name="line.216"></a>
<span class="sourceLineNo">217</span>            }<a name="line.217"></a>
<span class="sourceLineNo">218</span>        }<a name="line.218"></a>
<span class="sourceLineNo">219</span><a name="line.219"></a>
<span class="sourceLineNo">220</span>        /**<a name="line.220"></a>
<span class="sourceLineNo">221</span>         * Close this instance. Does nothing if already closed.<a name="line.221"></a>
<span class="sourceLineNo">222</span>         */<a name="line.222"></a>
<span class="sourceLineNo">223</span>        @Override<a name="line.223"></a>
<span class="sourceLineNo">224</span>        public void close() throws IOException {<a name="line.224"></a>
<span class="sourceLineNo">225</span>            synchronized (InputStreamReader.this) {<a name="line.225"></a>
<span class="sourceLineNo">226</span>                if (this.closed)<a name="line.226"></a>
<span class="sourceLineNo">227</span>                    return;<a name="line.227"></a>
<span class="sourceLineNo">228</span>                this.closed = true;<a name="line.228"></a>
<span class="sourceLineNo">229</span>                this.checkInputClose();<a name="line.229"></a>
<span class="sourceLineNo">230</span>            }<a name="line.230"></a>
<span class="sourceLineNo">231</span>        }<a name="line.231"></a>
<span class="sourceLineNo">232</span><a name="line.232"></a>
<span class="sourceLineNo">233</span>        @Override<a name="line.233"></a>
<span class="sourceLineNo">234</span>        public int read(byte[] buf, int off, int len) throws IOException {<a name="line.234"></a>
<span class="sourceLineNo">235</span>            if (len &lt; 0 || off &lt; 0 || off + len &gt; buf.length)<a name="line.235"></a>
<span class="sourceLineNo">236</span>                throw new IndexOutOfBoundsException();<a name="line.236"></a>
<span class="sourceLineNo">237</span>            int count = 0;<a name="line.237"></a>
<span class="sourceLineNo">238</span>            while (count &lt; len) {<a name="line.238"></a>
<span class="sourceLineNo">239</span>                int ch = this.read();<a name="line.239"></a>
<span class="sourceLineNo">240</span>                if (ch == -1) {<a name="line.240"></a>
<span class="sourceLineNo">241</span>                    if (count == 0)<a name="line.241"></a>
<span class="sourceLineNo">242</span>                        return -1;<a name="line.242"></a>
<span class="sourceLineNo">243</span>                    break;<a name="line.243"></a>
<span class="sourceLineNo">244</span>                }<a name="line.244"></a>
<span class="sourceLineNo">245</span>                buf[off++] = (byte)ch;<a name="line.245"></a>
<span class="sourceLineNo">246</span>                count++;<a name="line.246"></a>
<span class="sourceLineNo">247</span>            }<a name="line.247"></a>
<span class="sourceLineNo">248</span>            return count;<a name="line.248"></a>
<span class="sourceLineNo">249</span>        }<a name="line.249"></a>
<span class="sourceLineNo">250</span><a name="line.250"></a>
<span class="sourceLineNo">251</span>        @Override<a name="line.251"></a>
<span class="sourceLineNo">252</span>        public long skip(long num) throws IOException {<a name="line.252"></a>
<span class="sourceLineNo">253</span>            long count = 0;<a name="line.253"></a>
<span class="sourceLineNo">254</span>            while (count &lt; num &amp;&amp; this.read() != -1)<a name="line.254"></a>
<span class="sourceLineNo">255</span>                count++;<a name="line.255"></a>
<span class="sourceLineNo">256</span>            return count;<a name="line.256"></a>
<span class="sourceLineNo">257</span>        }<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span>        @Override<a name="line.259"></a>
<span class="sourceLineNo">260</span>        public boolean markSupported() {<a name="line.260"></a>
<span class="sourceLineNo">261</span>            return false;<a name="line.261"></a>
<span class="sourceLineNo">262</span>        }<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span>        @Override<a name="line.264"></a>
<span class="sourceLineNo">265</span>        public void mark(int readlimit) {<a name="line.265"></a>
<span class="sourceLineNo">266</span>        }<a name="line.266"></a>
<span class="sourceLineNo">267</span><a name="line.267"></a>
<span class="sourceLineNo">268</span>        @Override<a name="line.268"></a>
<span class="sourceLineNo">269</span>        public void reset() throws IOException {<a name="line.269"></a>
<span class="sourceLineNo">270</span>            throw new IOException("mark/reset not supported");<a name="line.270"></a>
<span class="sourceLineNo">271</span>        }<a name="line.271"></a>
<span class="sourceLineNo">272</span><a name="line.272"></a>
<span class="sourceLineNo">273</span>        public void checkInputClose() throws IOException {<a name="line.273"></a>
<span class="sourceLineNo">274</span>            synchronized (InputStreamReader.this) {<a name="line.274"></a>
<span class="sourceLineNo">275</span>                if (this.closed &amp;&amp; InputStreamReader.this.closed)<a name="line.275"></a>
<span class="sourceLineNo">276</span>                    this.in.close();<a name="line.276"></a>
<span class="sourceLineNo">277</span>            }<a name="line.277"></a>
<span class="sourceLineNo">278</span>        }<a name="line.278"></a>
<span class="sourceLineNo">279</span><a name="line.279"></a>
<span class="sourceLineNo">280</span>        public boolean isEOF() {<a name="line.280"></a>
<span class="sourceLineNo">281</span>            return this.eof;<a name="line.281"></a>
<span class="sourceLineNo">282</span>        }<a name="line.282"></a>
<span class="sourceLineNo">283</span>    }<a name="line.283"></a>
<span class="sourceLineNo">284</span>}<a name="line.284"></a>
<span class="sourceLineNo">285</span><a name="line.285"></a>




























































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